The Law on Energy Efficiency promotes the rational use of energy, the deployment of renewable energiy and energy substitution as national priorities. According to technical, economic and environmental considerations, the transition to less intensive and polluting energy sources is now compulsory. To promote renewable energy and co-generation, the legislation allows energy companies that develop a co-generation facility to sell the electricity producted to the public utility STEG and feed it into the national grid, according to a Power Purchase Agreement . The Law initiates the Promotion Programme on Renewable Energy that includes the following primary measures: - Developing the use of wind energy to produce electricity, - Encourage the use of solar thermal energy in public lighting, - Promoting solar energy in rural electrification, water pumping and desalination, and - Supporting waste management programmes, geothermal energy, small hydro and natural gas. The legislation also creates the National Agency for the Promotion of Renewable Energy (ANME) (Chapt III), replacing the National Agency of Renewable Energy previously established in 1985. The ANME is in charge of several activities, including: - The proposal and development of new procedures to develop energy efficiency and renewable energy projects; - The implementation of a clear labeling scheme to deliver energy efficiency and renewable energy certificates to materials, household appliances and equipment that contribute to a rational use of energy; - The promotion of training in energy efficiency and research in renewable energy technologies; - The ANME reviews and assesses investments in Energy Efficiency and Renewable Energy and controls the proper use of governmental aid and support mechanisms.